Chaeles e



- G,R.HARV1N. RO'IAPAKv ENGINE.

PatentedJuly 14, 1885..

constructed with the openings I I, as shown.

UNITE Srarns CHARLES R. HARVIN, OF MANN-ING, SOUTH CAROLINA.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 322,179, dated July14:, 1885.

Application filed December 20, 1884, (No model.)

To all whom t may "concern:

Be it known that I, CHARLES B. HARvlN, of Manning, in the county ofClarendon and State of South Carolina, have invented certain new anduseful Improvements in Rotary Eugines; and I do hereby declare thefollowing to be afull, clear, and exact description of the invention,such as willV enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to an improvement in rotary engines, the object ofthe same being to provide a device of the above character which shall besimple and economical in construction and durable and efficient in use;and with these ends in view my invention consists in the certainfeatures of construction and combinations of parts, as will behereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective View ofmy-imp'rovement, and Fig. 2 is a vertical sectional view.`

A represents a drivewheel or motor, the periphery of which is providedwith the circumferential groove B. At intervals on the face of the wheeland in the said groove B are located the heads C, which are adapted torest flush with the sides or rim of the wheel; The wheel A is suitablykeyed to the shaft D, which in turn is j ournaled in suitable bearings,E, on the standards F.

G is a steam-chest provided with the port H, which leads to the groove Bon the wheel A, and by means of which the steam is impelled against theheads C. The chest G is also provided with the valve H, preferably Thesaid valve is adapted to open and close the port H, thus regulating theflow of steam to the wheel. The valve H is operated by means ofthevalve-rod J, which passes through the stuiiing-box K. The rod J isconnected to the lever M in any suitable manner. To the opposite end ofthe lever is pivoted the connecting-rod N, which is operated by means ofthe eccentric connected with the shaft I). The valve H is adapted tooperate so that at each revolution of the Wheel it will be driven fromone end of the chest to the other and back again once during a singlerevolution of the wheel A, thus opening the steam-port four times duringeach revolution. The valve is constructed to open the port just as oneof the heads passes the port, thus forcing the steam against the same.The valve now closes the port, and the wheel is continued to be drivenguides, and provided with the arms Qand the tongue Q, the tongue ofwhich is adapted to snugly fit within the groove B. The abutment is heldin cont-act with the wheel A by means of the spring R, one end of whichbears against the head of the steam-chest G, and the opposite endagainst the abutment. When the wheel revolves, it becomes necessary tohave the tongue Q withdrawn a sufficient distance to permit the passageof the heads C. This is accomplished by means of the cam-wheels T, whichare secured to the wheels A, and are adapted to come in ,contact withthe arms Q at regular intervalsaviz., just before each of the headsreaches the tongue Q', and causes the spr-ingactuated abutment l? torecede a sufficient distance to allow the tongue Q to freely pass thesame; but the cams on the plate are of such construction that they willadmit of the arm Q springing back into the groove the moment the head ispassed. The wheel is incased in a'suitable metallic cover, to preventthe escape of steam. One end ofthe casing is provided with an exhaustlocated at a suitable distance from the port.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with a wheel provided with a groove on its face, andheads located at intervals in said groove, and an abutment for holdingthe live steam on the wheel, of devices located on the side or sides ofthe drive-wheel, by means of which the abutment is moved away from theheads, substantially as set forth.

2.V The combination, with a drive-wheel provided with a groove on itsperiphery, and heads located in said groove, and an abutment for IOOholding the live steam on the Wheel, of eamwheels operated by thedrive-Wheel, by means of which the abutment is moved away from theheads, substantially as set forth.

3. The combination, with a Wheel provided with a groove on itsperiphery, and heads located in said groove, and a steam-Chest situatedconveniently near the wheel, and a portopening on said groove, of avalve located in the chest, and means for reciprocating the valve,whereby steam is admitted to the groove as one of the heads passes theport, substantially as set forth.

4. The combination, with a Wheel provided with a groove on itsperiphery, and heads 1o- CHARLES R. HARVIN.

Vitnesses:

B. S. DINKINS, B. PRENLEY BARRON.

